Historical clue formulations

• ___ Sea (arm of the Arctic Ocean) — 2025-12-30
• Journalist Swisher — 2022-05-27
• ___ Zor-El (Supergirl's real name) — 2021-08-17
• ___ Zor-El, real name of Supergirl — 2021-07-14
• ___ Lawson, W.N.B.A. star-turned-coach for the Boston Celtics — 2020-05-23
• ___ Zor-El, Supergirl's birth name — 2018-09-22
• Russia's ___ Sea (arm of the Arctic Ocean) — 2017-11-05
• ___ Zor-El, Supergirl's birth name — 2010-08-05
• "American Idol" judge DioGuardi — 2009-06-10
• ___ Sea (arm of the Arctic Ocean) — 2008-04-25
• Supergirl's real name — 2005-06-24
• Ted Kennedy's eldest — 1996-08-30